Gustave has taken it upon himself to observe Marion and Sanglain following the death of the Princess and DT.   But KT thinks Gustave is in the city of Marquesas for other reasons. 
Who do you think I am?!
¡¿Quién crees que soy?!
¡¿Quién crees que soy?!
Quem você acha que eu sou?!